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Laim Patent No. 65,023, daad May 2151861.

i IMPaovED rADDLE-WHEEL.

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TO ALL WHOM I'I MAY CONCERN:

Be it known that I, ELIHU SPENCER, ofOttawa, in the county of Carlton, and Province of Canada West,

have invented certain new'and useful improvements in Fenthering Paddle-Wheels; and I do hereby declare thatthe following is a full, clear, and exact description thereof, reference beinghad to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon, like letters indicating like parts wherever they occur.

To enable others skilled in the art to construct and use my. invention, I will proceed to describe it.

My invention consists in a novel manner of c'onstructing feathering paddle-weeels for steam vessels, and of arranging the same for use.

Figure 1 is a top plan view of the wheel complete.

Figure 2, a transverse section of a portion of the same.

Figure 3, a side view of the feathering cams; and

Figure 4, a top View of a portion.

Arepresents the hub or central part of the Wheel, mounted on a vertical shaft, C. From this hub projects a series of radial rods, d, which support a ring, a, surrounding the hub, and also' at their extremities another ring, D; these two rings a and D being placed edgewise, represented in iig. I. Ail'at ring, B, is secured permanently above the rods d,.just outside of the ring gz, as shown'in tig. 1, this ring B being stationary. A series of buckets, I,'is mounted between the rings a and D, and is hung on journals, so as to turn readily; these buckets being arranged radially around the hub A, as shown in fig. 1. To the inner end of the journal of the buckets issecured a cam, b, the shape of which is shown in iig. 3. This cam is so located as to be directly under the flat ring B, which has cut in it tivo notches n, as shown in figs. 1 and 4, into which notches the point of the cam b will enter asthe Wheel revolves, as will be hereinafter explained. On the opposite edge of the ring B is a projection, c, directly opposite to the notch n, and another cam L is secured to the journal of the bucket I, just inside of the ring B, so that, as the wheel revolves, one of the points of this cam i will strike against thisl projection 7i, asshown in 4,

Theuesult ofthisconstruction and larrangement of parts; is as follows: The wheel being put in motion, the. buckets I will remain in a horizontal position while passing from one to the other of the notches n, the two points of the cam b sliding along in contact with the under side of the ring, and thus holding the bucket I in that position. As they arrive a't the notch n the point of the inner cam 71. irst'strikes against the vprojec` tion c, which gives to the bucket an eighth of a turn, and immediately thereafter the point of the outer cam b enters the notch n, and striking against the edge of the ring' B at one side of the notch, as shown in iigs. 3 and 4, gives to the bucket another eighth cfa turn, and brings it to a vertical position, in which position it is held by the two upper points of the cam b, vwhich slide along in contact with the under surface of the ring B until they arrive at the notch on the opposite side of the ring, where the same operation is repeated,

by which the bucket is brought into a horizontal position again, and so remains until it arrives at the irst notch again.

Thus it will bel seen that each of the buckets is feathered independently, as it passes the point where the projection c and notch 'n on the ring B are loca-ted. These notches and projections may be located at any desired point on the ring B, and thus thebuckets may be made to assume the vertical position during such portion of the revolution of the wheel as muy be desired. It is also obvious that the 4location of the notches and projections may be reversed; that is to say, the notch maybe placed on the inner edge of the ring B, and the projection on the outside, and the effect be the same.

In applying-my improved wheel, it may be used in the form of an ordinary paddle-wheel; but I prefer to locate it horizontally below the water-line, withits inner side titting into a recess formed'for it in the side of the vessel. By having a wheel thus arranged on each side, a vessel may he turned as on a pivot, by revolving the two-Wheels in opposite directions. This plan is especially useful in war vessels, as the wheels, being thus located some distance below the water-line, will be protected from injury from shots. Another advantage is, that with wheels thus located the rolling of. the vessel will not raise the wheels out of the Water, and hence there will be no danger-'of injuring or disarranging the machinery from that cause, asis so frequently the case with the ordinary paddle-wheels.

Having thus described my invention, what I claim isvThe pivoted buckets I, provided with the cams b and z, and arranged to operate in connection with the stationary ring B, having the notches n and projections@ formed thereon, substantially as shown and described.

ELIHU SPENCER. Witnesses GEO. HAY,

H. S. BOYD. 

